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// Based on the example from http://www.java2s.com/Code/Java/JDK-6/CompilingfromMemory.htm
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package javaCompile;
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import java.net.URI;
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import java.util.Arrays;
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import java.util.List;
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import java.util.ArrayList;
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import java.lang.String;
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import javax.tools.JavaCompiler;
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import javax.tools.JavaFileObject;
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import javax.tools.SimpleJavaFileObject;
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import javax.tools.StandardJavaFileManager;
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import javax.tools.ToolProvider;
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import javax.tools.JavaFileObject.Kind;
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public class CompileSourceInMemory {
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	public static boolean CompileFromMemory(String strClass, String strCodeContent) {
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		String[] classNames	= { strClass };
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		String[] codeContent 	= { strCodeContent };
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		return CompileFromMemory(classNames, codeContent, null);
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	}
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	public static boolean CompileFromMemory(String[] classNames, String[] codeContent) {
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		return CompileFromMemory(classNames, codeContent, null);
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	}
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	public static boolean CompileFromMemory(String[] classNames, String[] codeContent, String[] compOptions) {
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		List<String> compOptList = null;
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		if (compOptions != null) { compOptList = Arrays.asList(compOptions); }
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		JavaCompiler compiler = ToolProvider.getSystemJavaCompiler();
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		// Need to add a check that classNames.length == codeContent.length, else we're fubared.
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		List<JavaFileObject> files = new ArrayList<JavaFileObject> () ;
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		int i = 0;
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		for (String codePage : codeContent) {
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			files.add(new JavaSourceFromString(classNames[i], codePage));
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			i++;
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		}
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		Iterable<? extends JavaFileObject> compilationUnits = files;
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		JavaCompiler.CompilationTask task = compiler.getTask(null, null, null, compOptList, null, compilationUnits);
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		boolean success = task.call();
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		return success;
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	}
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}
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class JavaSourceFromString extends SimpleJavaFileObject {
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	final String code;
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	JavaSourceFromString(String name, String code) {
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		super(URI.create("string:///" + name.replace('.','/') + Kind.SOURCE.extension),Kind.SOURCE);
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		this.code = code;
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	}
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	@Override
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	public CharSequence getCharContent(boolean ignoreEncodingErrors) {
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		return code;
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	}
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}
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